wasm-builder: Use riscv32emac-unknown-none-polkavm.json target #5506

Job	Run time
preflight / preflight	38s
preflight / preflight	38s
preflight / ci-versions	1m 2s
preflight / ci-versions	1m 2s
cargo-check-benches (master)	12m 9s
cargo-check-benches (master)	20m 59s
cargo-check-benches (current)	12m 21s
cargo-check-benches (current)	20m 56s
test-node-metrics	8m 22s
test-node-metrics	8m 22s
test-frame-ui	46m 22s
test-frame-ui	46m 22s
test-full-crypto-feature	2m 37s
test-full-crypto-feature	2m 37s
cargo-check-all-crate-macos	12m 50s
cargo-check-all-crate-macos	12m 50s
cargo-check-each-crate (1)	18m 12s
cargo-check-each-crate (1)	18m 12s
cargo-check-each-crate (2)	19m 15s
cargo-check-each-crate (2)	19m 15s
cargo-check-each-crate (3)	8m 20s
cargo-check-each-crate (3)	8m 20s
cargo-check-each-crate (4)	16m 42s
cargo-check-each-crate (4)	16m 42s
cargo-check-each-crate (5)	23m 25s
cargo-check-each-crate (5)	23m 25s
cargo-check-each-crate (6)	14m 27s
cargo-check-each-crate (6)	14m 27s
cargo-check-each-crate (7)	30m 49s
cargo-check-each-crate (7)	30m 49s
test-frame-examples-compile-to-wasm	3m 8s
test-frame-examples-compile-to-wasm	3m 8s
test-deterministic-wasm	6m 27s
test-deterministic-wasm	6m 27s
check-tracing	2m 24s
check-tracing	2m 24s
check-metadata-hash	6m 13s
check-metadata-hash	6m 13s
node-bench-regression-guard	9s
node-bench-regression-guard	12s
All test misc tests passed	1s
All test misc tests passed	1s
	8h 29m 14s

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